Expert: Melted fuel found at Fukushima — Corium up to 6 feet thick beneath reactor — Nuclear waste “piling up at bottom” — Lava-like material has spread all over… “hanging like icicles” — Mystery orange material seen (VIDEO)

 

 

Kyodo, Jul 22, 2017 (emphasis added): In big step forward, Tepco finds melted fuel at bottom of reactor 3 in Fukushima… The debris was clearly identifiable to at least one nuclear expert. “The images that appear to be melted fuel debris match those found in the (1986) Chernobyl crisis,” said Tadashi Narabayashi, a specially appointed professor of nuclear engineering working at Hokkaido University. “It’s definitely fuel debris… It’s an epoch-making event.”

New York Daily News, Jul 22, 2017: Underwater robot captures images of melted fuel at wrecked Fukushima nuclear plant — An underwater robot captured photos of 3-foot thick lumps of melted nuclear fuel covering the floorContinue reading

Officials: Melted fuel still leaking out of Fukushima reactor — Likely escaping from opening at bottom of containment vessel — Gov’t experts want to give up sending in robots to search for molten cores — “Disaster the likes of which has never been known”

Asahi Shimbun, Mar 24, 2017: Some Nuclear Regulation Authority members are skeptical of continuing to send robots into reactors in the crippled Fukushima No. 1 nuclear plant… These regulators are increasingly calling for a new survey methodology after recent investigations utilizing robots controlled remotely generated few findings and were quickly terminated… The lower part of the reactor’s containment vessel is submerged in water where deposits of fuel debris are believed to reside below the surface after melting through… TEPCO and the government… have yet to collect information on the location, amount and condition of the melted fuel… [T]he surveys centering around the robots so far have failed to produce meaningful results. Continue reading

“Emergency measures” taken at Fukushima plant after “unexpected dents” found on reactor building floor — Situation “much worse than expected” — Experts: It’s like a “burning house”… “I was shocked” by outcome… “Streaming of radiation” may be underway

Mainichi Shimbun, Feb 27, 2017 (emphasis added): Search for melted nuclear fuel at Fukushima plant’s No. 2 reactor faces obstacles… so far, they have been unable to identify the location of the melted nuclear fuel… a number of unexpected problems emerged… Heavy machinery giant IHI Corp.’s Keizo Imahori, 38, who oversaw the mechanical boring of the containment vessel in December 2016, explains that, “A number of unexpected dents were found on the floor of the nuclear reactor building.” This was a surprising discovery for Imahori and his team… As an emergency measure, 1-meter by 1-meter iron sheets were used to cover the dents… [T]he Fukushima No. 1 Nuclear Power Plant [is] somewhat like a “burning house” Yasuo Hirose, of IHI Corp., states… Continue reading

Melted fuel from Fukushima disaster still missing

Before officials can tackle the challenge of removing the melted fuel, they first have to find out where the nuclear waste is located. The radiation levels at the wreckage are too high for people to investigate. In an effort to find the missing waste, engineers have developed remote control robots to withstand the radiation levels.

Even remote control robots are insufficient to probe the crippled reactors. A robot probe quit working in three hours after it was sent into Fukushima’s No. 1 plant to collect radiation levels. The mission was intended to last ten hours. The probe was designed to withstand high radiation levels. No one knows exactly why the robot stopped working. Continue reading